Zhoushan Fishing Ground in China is built in the sea area with obvious decline or upwelling.

Zhoushan fishing ground is built on upwelling. Most of the famous fishing grounds are built in the sea areas with obvious upwelling, such as Kuril Islands fishing ground in Russia, Peru fishing ground in Peru, Newfoundland fishing ground in Canada and Zhoushan fishing ground in China.

Upflow can not only bring the bottom seawater to the surface, but also bring a large number of nutrients to the surface of deep water, which becomes the nutrition of phytoplankton and makes phytoplankton multiply in large numbers. The reproduction of phytoplankton provides abundant food for zooplankton, thus attracting more fish.

cause

1. The East China Sea has a vast continental shelf, abundant sunshine and rich nutrition;

2. The inflow of water from the Yangtze River brings a lot of nutrients;

3. Warm current and coastal cold current in Taiwan Province Province meet here, which makes ocean currents stir and nutrients float;

4. There are many surrounding islands, which provide favorable conditions for the life and reproduction of fish;

5, the location is moderate, which is the only way for many economic fish to migrate.

In addition, the reasons for the formation of fishing grounds are deep-sea nutrients brought by the rising compensation current, latitude factors, seasonal temperature difference and so on.

The intersection of cold current and warm current makes the ambient temperature not too different, neither too cold nor too hot. Warm fish can be on the warm current side, and cold fish can be on the cold current side, so that many fish meet near Zhoushan. Natural fishing grounds were thus formed.